diff --git a/examples/depower.jl b/examples/depower.jl
index 826a56a..5cbbb1f 100644
--- a/examples/depower.jl
+++ b/examples/depower.jl
@@ -46,7 +46,7 @@ function simulate(integrator, steps; log=false)
         elseif i == 640
             set_depower_steering(kps4.kcu, 0.35, 0.0)    
         end
-        KiteModels.next_step!(kps4, integrator, dt=dt)     
+        KiteModels.next_step!(kps4, integrator; set_speed=0, dt=dt)     
         if mod(i, TIME_LAPSE_RATIO) == 0 || i == steps
             if SHOW_VIEWER update_system2(kps4) end
             if log
diff --git a/examples/depower_simple.jl b/examples/depower_simple.jl
index 3278f4e..49d5a1e 100644
--- a/examples/depower_simple.jl
+++ b/examples/depower_simple.jl
@@ -41,7 +41,7 @@ function simulate(integrator, steps)
         elseif i == 640
             set_depower_steering(kps4.kcu, 0.35, 0.0)    
         end
-        t_sim = @elapsed KiteModels.next_step!(kps4, integrator, dt=dt)
+        t_sim = @elapsed KiteModels.next_step!(kps4, integrator; set_speed=0, dt=dt)
         t_gc = 0.0
         # if t_sim < 0.08*dt
         #     t_gc = @elapsed GC.gc(false)
diff --git a/examples/joystick.jl b/examples/joystick.jl
index 3c4084d..f2e60f0 100644
--- a/examples/joystick.jl
+++ b/examples/joystick.jl
@@ -52,7 +52,7 @@ function simulate(integrator)
             set_depower_steering(kps4.kcu, depower, jsaxes.x)
             v_ro = jsaxes.u * 8.0 
         end   
-        t_sim = @elapsed KiteModels.next_step!(kps4, integrator, v_ro=v_ro, dt=dt)
+        t_sim = @elapsed KiteModels.next_step!(kps4, integrator; set_speed=v_ro, dt=dt)
         if t_sim < 0.3*dt
             t_gc_tot += @elapsed GC.gc(false)
         end
diff --git a/examples/reelout.jl b/examples/reelout.jl
index 297064b..0cf9320 100644
--- a/examples/reelout.jl
+++ b/examples/reelout.jl
@@ -47,7 +47,7 @@ function simulate(integrator, steps; log=false)
         if i > 300
             v_ro += acc*dt
         end
-        KiteModels.next_step!(kps4, integrator, v_ro=v_ro, dt=dt)     
+        KiteModels.next_step!(kps4, integrator; set_speed=v_ro, dt=dt)     
         if mod(i, TIME_LAPSE_RATIO) == 0 || i == steps
             if SHOW_VIEWER update_system2(kps4) end
             if log
diff --git a/examples/steering_4p.jl b/examples/steering_4p.jl
index dc9ea08..b939ba3 100644
--- a/examples/steering_4p.jl
+++ b/examples/steering_4p.jl
@@ -42,7 +42,7 @@ function simulate(integrator, steps)
             set_depower_steering(kps4.kcu, 0.25, 0.0)           
         end
         # KitePodModels.on_timer(kcu, dt)
-        KiteModels.next_step!(kps4, integrator, dt=dt)     
+        KiteModels.next_step!(kps4, integrator; set_speed=0, dt=dt)     
         reltime = i*dt
         if mod(i, TIME_LAPSE_RATIO) == 0 || i == steps
             update_system2(kps4) 
diff --git a/examples/steering_bench_video.jl b/examples/steering_bench_video.jl
index 647e7c8..97e770a 100644
--- a/examples/steering_bench_video.jl
+++ b/examples/steering_bench_video.jl
@@ -54,7 +54,7 @@ function simulate(integrator, steps; log=false)
             set_depower_steering(kps4.kcu, 0.25, 0.0)           
         end
         # KitePodModels.on_timer(kcu, dt)
-        KiteModels.next_step!(kps4, integrator, dt=dt)     
+        KiteModels.next_step!(kps4, integrator; set_speed=0, dt=dt)     
         if mod(i, TIME_LAPSE_RATIO) == 0 || i == steps
             update_system2(kps4) 
             if log
diff --git a/test/test_for_precompile.jl b/test/test_for_precompile.jl
index a4529f4..49d5dec 100644
--- a/test/test_for_precompile.jl
+++ b/test/test_for_precompile.jl
@@ -37,7 +37,7 @@ let
                 set_depower_steering(kps4.kcu, 0.25, 0.0)            
             end
             # KitePodModels.on_timer(kcu, dt)
-            KiteModels.next_step!(kps4, integrator, dt=dt)     
+            KiteModels.next_step!(kps4, integrator; set_speed=0, dt=dt)     
             update_system2(kps4)
             # sleep(dt/5)    
             wait_until(start_time_ns+i*dt/TIME_LAPSE_RATIO*1e9)     
diff --git a/test/test_steering.jl b/test/test_steering.jl
index 5b6f28a..046b45a 100644
--- a/test/test_steering.jl
+++ b/test/test_steering.jl
@@ -40,7 +40,7 @@ function simulate(integrator, steps)
             set_depower_steering(kps4.kcu, 0.25, 0.0)            
         end
         # KitePodModels.on_timer(kcu, dt)
-        KiteModels.next_step!(kps4, integrator, dt=dt)     
+        KiteModels.next_step!(kps4, integrator; set_speed=0, dt=dt)     
         reltime = i*dt
         if mod(i, TIME_LAPSE_RATIO) == 0 || i == steps
             update_system2(kps4)